| Comments | White Rock BC, June 8, 1999. A sudden, intense storm delivered 200 mm of pea-sized hail, and an extra 70 mm of rain in less than 4 hours, created flash floods and mudslides in White Rock, a suburb of Vancouver BC. At its height, the water was over 1.5 m deep. Both streets and basements were flooded, and sewer and water mains backed up causing a health hazard. Emergency workers evacuated people from their homes and closed schools. |